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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">attach_background_to_window</span><span data-if="c" style="display:none;">T_attach_background_to_window</span><span data-if="cpp" style="display:none;">AttachBackgroundToWindow</span><span data-if="dotnet" style="display:none;">AttachBackgroundToWindow</span><span data-if="python" style="display:none;">attach_background_to_window</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">attach_background_to_window</span><span data-if="c" style="display:none;">T_attach_background_to_window</span><span data-if="cpp" style="display:none;">AttachBackgroundToWindow</span><span data-if="dotnet" style="display:none;">AttachBackgroundToWindow</span><span data-if="python" style="display:none;">attach_background_to_window</span></code> — Attach a background image to a HALCON window.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>attach_background_to_window</b>(<a href="#Image"><i>Image</i></a> :  : <a href="#WindowHandle"><i>WindowHandle</i></a> : )</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>T_attach_background_to_window</b>(const Hobject <a href="#Image"><i>Image</i></a>, const Htuple <a href="#WindowHandle"><i>WindowHandle</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>AttachBackgroundToWindow</b>(const HObject&amp; <a href="#Image"><i>Image</i></a>, const HTuple&amp; <a href="#WindowHandle"><i>WindowHandle</i></a>)</code></p>
<p>
<code>void <a href="HWindow.html">HWindow</a>::<b>AttachBackgroundToWindow</b>(const HImage&amp; <a href="#Image"><i>Image</i></a>) const</code></p>
<p>
<code>static void <a href="HDrawingObject.html">HDrawingObject</a>::<b>AttachBackgroundToWindow</b>(const HImage&amp; <a href="#Image"><i>Image</i></a>, const HWindow&amp; <a href="#WindowHandle"><i>WindowHandle</i></a>)</code></p>
</div>
<div data-if="com" style="display:none;"></div>
<div data-if="dotnet" style="display:none;">
<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>AttachBackgroundToWindow</b>(<a href="HObject.html">HObject</a> <a href="#Image"><i>image</i></a>, <a href="HTuple.html">HTuple</a> <a href="#WindowHandle"><i>windowHandle</i></a>)</code></p>
<p>
<code>void <a href="HWindow.html">HWindow</a>.<b>AttachBackgroundToWindow</b>(<a href="HImage.html">HImage</a> <a href="#Image"><i>image</i></a>)</code></p>
<p>
<code>static void <a href="HDrawingObject.html">HDrawingObject</a>.<b>AttachBackgroundToWindow</b>(<a href="HImage.html">HImage</a> <a href="#Image"><i>image</i></a>, <a href="HWindow.html">HWindow</a> <a href="#WindowHandle"><i>windowHandle</i></a>)</code></p>
</div>
<div data-if="python" style="display:none;">
<p>
<code>def <b>attach_background_to_window</b>(<a href="#Image"><i>image</i></a>: HObject, <a href="#WindowHandle"><i>window_handle</i></a>: HHandle) -&gt; None</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p>This operator attaches the background image passed in <a href="#Image"><i><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></i></a>
to a HALCON window defined in <a href="#WindowHandle"><i><code><span data-if="hdevelop" style="display:inline">WindowHandle</span><span data-if="c" style="display:none">WindowHandle</span><span data-if="cpp" style="display:none">WindowHandle</span><span data-if="com" style="display:none">WindowHandle</span><span data-if="dotnet" style="display:none">windowHandle</span><span data-if="python" style="display:none">window_handle</span></code></i></a>. The input image is
copied. Thus it can be freed safely.
</p>
<p>The background image is instantly displayed in the HALCON window
when calling <code><span data-if="hdevelop" style="display:inline">attach_background_to_window</span><span data-if="c" style="display:none">attach_background_to_window</span><span data-if="cpp" style="display:none">AttachBackgroundToWindow</span><span data-if="com" style="display:none">AttachBackgroundToWindow</span><span data-if="dotnet" style="display:none">AttachBackgroundToWindow</span><span data-if="python" style="display:none">attach_background_to_window</span></code>. All HALCON objects
that were previously displayed in the window will still be displayed
when calling this operator. Thus the previous window content will
not be overwritten.
</p>
<p>The window contents are displayed in the following order: first the
background image, then HALCON objects, and finally the drawing objects.
Thus, the drawing object is displayed always on top.
Note that the window will be redrawn for each user interaction within
the window and each call of <a href="set_part.html"><code><span data-if="hdevelop" style="display:inline">set_part</span><span data-if="c" style="display:none">set_part</span><span data-if="cpp" style="display:none">SetPart</span><span data-if="com" style="display:none">SetPart</span><span data-if="dotnet" style="display:none">SetPart</span><span data-if="python" style="display:none">set_part</span></code></a>. HALCON objects can be
deleted from the window with <a href="clear_window.html"><code><span data-if="hdevelop" style="display:inline">clear_window</span><span data-if="c" style="display:none">clear_window</span><span data-if="cpp" style="display:none">ClearWindow</span><span data-if="com" style="display:none">ClearWindow</span><span data-if="dotnet" style="display:none">ClearWindow</span><span data-if="python" style="display:none">clear_window</span></code></a>.
</p>
<p>The background image can be removed from the window with the
operator <a href="detach_background_from_window.html"><code><span data-if="hdevelop" style="display:inline">detach_background_from_window</span><span data-if="c" style="display:none">detach_background_from_window</span><span data-if="cpp" style="display:none">DetachBackgroundFromWindow</span><span data-if="com" style="display:none">DetachBackgroundFromWindow</span><span data-if="dotnet" style="display:none">DetachBackgroundFromWindow</span><span data-if="python" style="display:none">detach_background_from_window</span></code></a>.
</p>
<h2 id="sec_attention">注意</h2>
<p>Note that using any synchronous operator which actively probe the event
queue, e.g., <a href="get_mbutton.html"><code><span data-if="hdevelop" style="display:inline">get_mbutton</span><span data-if="c" style="display:none">get_mbutton</span><span data-if="cpp" style="display:none">GetMbutton</span><span data-if="com" style="display:none">GetMbutton</span><span data-if="dotnet" style="display:none">GetMbutton</span><span data-if="python" style="display:none">get_mbutton</span></code></a> or <a href="read_char.html"><code><span data-if="hdevelop" style="display:inline">read_char</span><span data-if="c" style="display:none">read_char</span><span data-if="cpp" style="display:none">ReadChar</span><span data-if="com" style="display:none">ReadChar</span><span data-if="dotnet" style="display:none">ReadChar</span><span data-if="python" style="display:none">read_char</span></code></a>, will conflict with the
interaction with the drawing objects. In case the state of the cursor has to
be read, please refer to the documentation of your framework of choice for an
appropriate, non-invasive alternative.
</p>
<p>Furthermore, the event based functionality should not be used together with
the former blocking operators <a href="draw_rectangle1.html"><code><span data-if="hdevelop" style="display:inline">draw_rectangle1</span><span data-if="c" style="display:none">draw_rectangle1</span><span data-if="cpp" style="display:none">DrawRectangle1</span><span data-if="com" style="display:none">DrawRectangle1</span><span data-if="dotnet" style="display:none">DrawRectangle1</span><span data-if="python" style="display:none">draw_rectangle1</span></code></a>,
<a href="draw_rectangle2.html"><code><span data-if="hdevelop" style="display:inline">draw_rectangle2</span><span data-if="c" style="display:none">draw_rectangle2</span><span data-if="cpp" style="display:none">DrawRectangle2</span><span data-if="com" style="display:none">DrawRectangle2</span><span data-if="dotnet" style="display:none">DrawRectangle2</span><span data-if="python" style="display:none">draw_rectangle2</span></code></a>, <a href="draw_region.html"><code><span data-if="hdevelop" style="display:inline">draw_region</span><span data-if="c" style="display:none">draw_region</span><span data-if="cpp" style="display:none">DrawRegion</span><span data-if="com" style="display:none">DrawRegion</span><span data-if="dotnet" style="display:none">DrawRegion</span><span data-if="python" style="display:none">draw_region</span></code></a>, <a href="draw_xld.html"><code><span data-if="hdevelop" style="display:inline">draw_xld</span><span data-if="c" style="display:none">draw_xld</span><span data-if="cpp" style="display:none">DrawXld</span><span data-if="com" style="display:none">DrawXld</span><span data-if="dotnet" style="display:none">DrawXld</span><span data-if="python" style="display:none">draw_xld</span></code></a> or
<a href="draw_circle.html"><code><span data-if="hdevelop" style="display:inline">draw_circle</span><span data-if="c" style="display:none">draw_circle</span><span data-if="cpp" style="display:none">DrawCircle</span><span data-if="com" style="display:none">DrawCircle</span><span data-if="dotnet" style="display:none">DrawCircle</span><span data-if="python" style="display:none">draw_circle</span></code></a>. They conflict with the event based functionality, since
they actively fetch all events sent to the HALCON window.</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  <li>未经并行化处理。</li>
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="Image" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></b> (input_object)  </span><span>singlechannelimage <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject</span> (byte / direction / cyclic / int1 / int2 / uint2 / int4 / int8 / real / complex / vector_field)</span>
</div>
<p class="pardesc">Background image.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="WindowHandle" class="parname"><b><code><span data-if="hdevelop" style="display:inline">WindowHandle</span><span data-if="c" style="display:none">WindowHandle</span><span data-if="cpp" style="display:none">WindowHandle</span><span data-if="com" style="display:none">WindowHandle</span><span data-if="dotnet" style="display:none">windowHandle</span><span data-if="python" style="display:none">window_handle</span></code></b> (input_control)  </span><span>window <code>→</code> <span data-if="dotnet" style="display:none"><a href="HWindow.html">HWindow</a>, </span><span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">HHandle</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (handle)</span><span data-if="dotnet" style="display:none"> (<i>IntPtr</i>)</span><span data-if="cpp" style="display:none"> (<i>HHandle</i>)</span><span data-if="c" style="display:none"> (<i>handle</i>)</span></span>
</div>
<p class="pardesc">Window handle.</p>
</div>
<div data-if="hdevelop" style="display:inline">
</div>
<div data-if="c" style="display:none">
</div>
<div data-if="cpp" style="display:none">
</div>
<div data-if="com" style="display:none">
</div>
<div data-if="dotnet" style="display:none">
</div>
<h2 id="sec_result">结果</h2>
<p>If the window exists and the specified parameters are correct
<code><span data-if="hdevelop" style="display:inline">attach_background_to_window</span><span data-if="c" style="display:none">attach_background_to_window</span><span data-if="cpp" style="display:none">AttachBackgroundToWindow</span><span data-if="com" style="display:none">AttachBackgroundToWindow</span><span data-if="dotnet" style="display:none">AttachBackgroundToWindow</span><span data-if="python" style="display:none">attach_background_to_window</span></code> returns <TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
    .  If necessary an exception
is raised.</p>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="open_window.html"><span data-if="hdevelop" style="display:inline">open_window</span><span data-if="c" style="display:none">open_window</span><span data-if="cpp" style="display:none">OpenWindow</span><span data-if="com" style="display:none">OpenWindow</span><span data-if="dotnet" style="display:none">OpenWindow</span><span data-if="python" style="display:none">open_window</span></a></code>
</p>
<h2 id="sec_successors">可能的后置算子</h2>
<p>
<code><a href="detach_background_from_window.html"><span data-if="hdevelop" style="display:inline">detach_background_from_window</span><span data-if="c" style="display:none">detach_background_from_window</span><span data-if="cpp" style="display:none">DetachBackgroundFromWindow</span><span data-if="com" style="display:none">DetachBackgroundFromWindow</span><span data-if="dotnet" style="display:none">DetachBackgroundFromWindow</span><span data-if="python" style="display:none">detach_background_from_window</span></a></code>
</p>
<h2 id="sec_module">模块</h2>
<p>
Foundation</p>
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